user
What are the most common elements found in the Earth's crust?
Response:
assistant
The most common elements found in the Earth's crust are oxygen, silicon, aluminum, iron, calcium, sodium, potassium and magnesium. These elements account for nearly 99% of the total mass of the Earth's crust and are the building blocks of all matter found on Earth. Oxygen is by far the most abundant element, making up 46.6% of the total mass. The other elements account for a total of 53.4%, with silicon the second most abundant element at 28%. Aluminum makes up 8.2% of the crust, followed by iron at 5.6%, calcium at 3.7%, sodium at 2.8%, potassium at 2.6%, and magnesium at 2.1%.